Cisco Switches: Difference between revisions
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= Cisco Switches = | = Cisco Switches = | ||
== Hardware == | |||
The switches for the ''private'' HPC cluster in room 68-822 are Catalyst 3750 series 24-port switches. They are in a stacked configuration meaning that the backbone spans the physical switches in a loop using Cisco StackWise Stacking Cables. | The switches for the ''private'' HPC cluster in room 68-822 are Catalyst 3750 series 24-port switches. They are in a stacked configuration meaning that the backbone spans the physical switches in a loop using Cisco StackWise Stacking Cables. | ||
== Software == | == Software == | ||
| Line 34: | Line 35: | ||
To exit just press Ctrl-A X. | To exit just press Ctrl-A X. | ||
See [http://www.cisco.com/en/US/products/hw/switches/ps5023/products_installation_and_configuration_guides_list.html here] for configurational information. Alan has all the passwords. | See [http://www.cisco.com/en/US/products/hw/switches/ps5023/products_installation_and_configuration_guides_list.html here] for configurational information. Alan has all the passwords. | ||
== Known Issues == | |||
We had an issue a while back where the switch for some reason was resetting the ports. To stop this we fixed the speed to gigabit on the ports that needed it. | |||
Latest revision as of 02:11, 24 August 2009
Cisco Switches
Hardware
The switches for the private HPC cluster in room 68-822 are Catalyst 3750 series 24-port switches. They are in a stacked configuration meaning that the backbone spans the physical switches in a loop using Cisco StackWise Stacking Cables.
Software
The current software version is Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)
Maintainance
There is a web interface set up on a virtual IP address on the cluster network: http://192.168.0.250/. Alternatively, the switches can be configured by logging into them from a serial port on one of the computers using the light blue cable to connect the serial port to the ethernet-like port on the switch. To do this, on the computer you are using type
# dmesg | grep tty # To find the serial port serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:0b: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A # setserial -g /dev/ttyS0 # To set it up /dev/ttyS0, UART: 16550A, Port: 0x03f8, IRQ: 4 # minicom -s # This software creates a terminal over the serial port to configure the switch, the first time you run it it is good to configure it
In minicom you need to change the following:
- in Serial Port Setup:
- serial device = /dev/ttyS0
- Bps/Par/Bits = 9600 8N1
- Hardware flow control = yes
- Software flow control = no
- Save setup as:
- cisco
- Exit minicom
# minicom cisco # To start the terminal. Note, there are authorisation commands required to change settings: en (enables the authorisation to change something or see an important setting), conf (enables the configuration for the switch, once authorised). Switch1> en Password: Switch1# conf Switch1(config)# exit Switch1# show version Cisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1) ...
To exit just press Ctrl-A X. See here for configurational information. Alan has all the passwords.
Known Issues
We had an issue a while back where the switch for some reason was resetting the ports. To stop this we fixed the speed to gigabit on the ports that needed it.
